Why the scale parameters of this object is 2000 times bigger and there is almost no difference between the two?
That's because the original scale of the object (when you added it) was relative to its first size (scale of an object is relative to its own original size, unlike dimensions).
To reset that scale just press Ctrl+A and click on apply scale, then you will see the object scale is [ 1, 1, 1 ] (unit scale). I hope that helps.